[6] Hethcote, H. W., Stech, H. W., Driessche, P. van den:
Periodicity and stability in epidemic models: a survey. Differential Equations and Applications in Ecology, Epidemics, and Population Problems S. Busenberg, K. L. Cooke Academic Press, New York (1981), 65-82.
MR 0645190 |
Zbl 0477.92014
[9] Ross, R.: The Prevention of Malaria. John Murray, London (1911).